韓國雜草學會 跳躍 發展의 契機를 맞이하여

李東右(Ree, Dong Woo) 韓國雜草學會 1988 Weed&Turfgrass Science Vol.8 No.2

第25回 日本雜草學會에 다녀와서

李東右(Ree, Dong Woo) 한국잡초학회 1987 Weed&Turfgrass Science Vol.7 No.1

경기지역에서 대두콩에 대한 피복재배효과

송주현,김성기,박경열,김병현,이동우,Song, Su-Hyeun,Kim, Sung-Ki,Park, Kyeong-Yeol,Kim, Byeong-Hyeon,Ree, Dong-Woo 한국작물학회 1987 한국작물학회지 Vol.32 No.1

This study was carried out to investigate the effects of early planting and polyethylene film (P.E) mulch on early maturing soybean of Korean native cultivar Kyeonggi No. 114 in the Kyeonggi area. It was planted four times at the ten days interval from April I to April 30 in 1985 and 1986. The average soil temperature was 1-5$^{\circ}C$ higher under the polyethylene film mulch condition than the conventional cultural practice condition. Soil moisture content also was higher under P.E mulch condition. Days to emergence was shortened 5-16 days and days to flowering was shortened 3-5 days. The fresh pod yield was increased 12% more at the planting date of April 1 and April 10. Income was increased 70, 83, more at the planting date of April 1 and April 10 under the polyethylene mm mulch conditions.

식물환경연구실편 : Heptachlor 토양잔류가 Hop 의 생육에 미치는 영향 - 제 1 보 Heptachlor 에 의한 Hop 피해양상 -

박경열(Kyeong Yeol Park),이동우(Dong Woo Ree),박창규(Chang Kyu Park),한대성(Dae Sung Han) 강원대학교 농업과학연구소 1989 강원 농업생명환경연구 Vol.3 No.-

R.I.를 利用한 作物의 Ion 吸收에 關한 硏究 : Ⅱ. 大麥에 있어서 N.K 및 Mg의 濃度가 P및 Ca의 吸收에 미치는 影響 Ⅱ. The effects on the absorption of P and Ca by concentrations of N,K and Mg in barley

李東右,朴愚喆,沈相七 진주농과대학 1966 진주농과대학 연구논문집 Vol.- No.5

P의 吸收에 N 및 K의 濃度가, 그리고 Ca의 吸收에 K 및 Mg의 濃度가 各各 어떤 影響을 미치는 가를 考察하기 爲해, 實驗을 한바 다음고 k같은 結果를 얻었다. 1. P의 吸收는 K의 濃度에는 別로 影響을 받지 않으나 N의 濃度에는 顯著하게 影響을 받았으며, N가 50.4ppm일때는 無窒素區보다 P의 吸收量이 낮았으며 N가 504ppm일때가 P吸收量이 제일 높았다. 2. Ca 吸收는 K의 濃度에 强하게 拮抗作用의 影響을 받았으나, Mg에 對하여는 弱한 拮抗作用이 나타났다. 3. Ca 吸收가 K와 Mg이 共存해 있을 時에는 Mg 濃度가 增加함에 따라 Ca와 K사이의 强한 拮抗作用이 解消되고, 오히려 Mg10(122ppm)區에서는 K0(無加里)區가 K1(35ppm)區보다 낮은 Ca 吸收量을 나타냈다. 4. 培養液中 空氣의 供給有無는 적어도 24時間內의 實驗에서는 ion 吸收量에 大 로 아무런 影響도 주지 못했다. To research the effects on the absorption of P and Ca by the concentrations of N, K and Mg in the young barley plant, this experiment was made. The results obtained were as follows: 1. The absorption of phosphate was effected by the concentration of nitrogen, but was neglectively effected by the potassium. The amount of its absorption was higher in the 504 ppm of nitrogen than in the others, and the next was in the 0 ppm of nitrogen, but in the 50.4 ppm pf nitrogen the absorption of phosphate was lowest. 2. The antagonism between Ca and K was very strongly appeared, and was slightly appeared between Ca and Mg. 3. It was obviously found that the strong antagonism between Ca and K was decreased with concentration of magnesium. 4. The absorption rates of young barley plant cultivated in the nutrient solution with aeration were similar with them without aeration in the short term experiments.

R.I.를 利用한 作物의 Ion 吸收에 關한 硏究 : I. 大麥에 있어서 培養液中 無機 Ion 濃度가 그들 無機 Ion의 吸收에 미치는 影響 I. The effects on the absorption of inorganic ions by the concentrations of each ions in barley

朴愚喆,李東右,沈相七 진주농과대학 1966 진주농과대학 연구논문집 Vol.- No.5

無機 Ion中 P, S 및 Ca의 吸收速度 및, 培養液中의 이들 Ion濃度가 各 Ion의 吸收量에 어떤 影響을 미치는가를, 大麥 幼植物에서 實驗한 結果는 다음과 같다. 1) 無機 Ion 吸收速度는 P가 가장 빨랐고, 그다음이 S, Ca 順이었다. 2) 培養液의 Ion濃度 增加에 따라 吸收量도 增加했으나 吸收速度가 가장 빠른 P의 飽和濃度가 가장 낮았고 S가 그다음 이었다. 그러나 Ca는 飽和濃度를 나타내지 않았다. 3) 根의 Ion 吸收量에 比例해서 莖葉에로의 移行量도 上昇했다. 4) 培養液中 P의 濃度는 25×10-2mM, S의 濃度는 50×10-2mM, Ca의 濃度는 50×10-2mM 程度가 短時間 實驗에는 좋을 듯 하다. The present experiment used the radio isotopes was established to study the relation between the inorganic ions absorption of the young barley plant and their concentrations contained in the nutrient solution when they were cultivated in the water culture solution. The results obtained were as follows: 1. In the absorption rate of inorganic ions, such as P, S and Ca, in the young barley plant, the phosphate ion was absorbed very fast, and the sulfate and the calcium ion were absorbed very slowly, however, the sulfate ion was faster than the calcium ion from the nutrient solution. 2. The ion absorption was increased at first low concentrations in the young barley plant, however, in accordance with the increasing concentrations the ion absorption was nearly constant. But the calcium ion absorption with insistantly slowly increased with the ion concentrations of calcium from the nutrient solution. 3. The translocation of ions to the shoots from the roots was identically increased with the ions absorption rate of roots of the young barley plant in this short term experiment. 4. The optimum concentration of phosphate was 25×10-²mM, and of sulfate and of calcium, 50×10-²mM respectively, in the nutrient solution during short term experiment.

들깨의 含油量 定量에 關한 實驗

李東右,鄭泰明 진주농과대학 1964 진주농과대학 연구논문집 Vol.- No.3

1. Soxhlet 裝置를 使用하여 들깨 種子의 含油量 定量에 있어서 實用的 最短抽出時間을 알고자 時間別抽出實驗을 하였다. 2. 들깨 種子의 油分抽出은 4時間程度의 抽出處理로서 實用的인 含油量을 定量할 수 있다고 생각된다. 1. The experiments were carried out to determine the reasonable extraction of oil content on perilla seeds using Soxhlet's extractor at six different time intervals. 2. From the results the extraction of the four hour period was sufficient for the practical work on the determination of oil content in perilla seeds.

보리밀에 있어서의 Seissor Emasculation에 對하여

李東右,曺章煥 진주농과대학 1962 진주농과대학 연구논문집 Vol.- No.1

1. 보리 밀에 있어서의 Scissor Emasculation의 實用的效果를 알고저 보리는 出穗 1日前과 2日前, 밀은 出穗 3日後와 4日後에 各各 葯의 上端으로부터 1/3, 1/2, 2/3를 切除하고 無授粉과 切除 1日 및 2日後에 授粉하여 結實率을 調査하여 보았다. 2. 보리는 出穗 1日前에 葯의 1/3 또는 2日前에 葯의 1/2을 切除하고 切除 2日後에 授粉한 것이 除雄도 安全하고 結實率도 좋았다. 3. 밀에 있어서는 出穗 3日後에 葯의 1/2, 出穗 4日後에 葯의 2/3切除로서 除雄의 效果는 있었으나 授粉後의 結實率이 낮았으며 實用化를 위해서는 좀더 檢討되어야 할 것으로 생각된다. 4. 이 除雄法은 造作上 注意와 多少의 熟練을 要하나 보리에 있어서는 實用的 價値가 있는 簡便한 方法이라 할 수 있겠다. 1. For the test of practical value of the scissor emasculation in barley and wheat, 1/3, 1/2 and 2/3 portion of each anther was cut away on 1 day & 2 days before heading in barley, 3 days & 4 days after heading in wheat, and then pollinated in some treated heads on 1 day and 2 days after treated, and some others were not pollinated, then seed set ratios were observed. 2. In the barley, emasculation was effective, and also seed set was good when 1/3 portion of the anther was cut away on the day before heading, or 1/2 portion of the anther was cut away on 2 days before the heading, when the pollination was completed 2 days later the anther was cut. 3. In the wheat, emasculation was effective when 1/2 portion of the anther was cut away on 3 days after heading, or 2/3 portion of the anther on 4 days after heading, however, the seed set ratio was low when the pollination was completed. A more detailed study shoud be required for the practical use of this emasculation method. 5. The scissor emasculation cam be used as a convenient method with a practical value, but a diminutive amount of experience would be required.

Linkage Relation of the Waxless Mutant Character in Barley

Ree,Dong Woo 진주농과대학 1962 진주농과대학 연구논문집 Vol.- No.1

1. 보리의 Waxy 系統(正常型)과 Waxless (無白粉體)系統 (突然變異型)과의 交雜의 F2를 利用하여 Waxy 對 Waxless 와 他形質과의 聯關關係와 그리고 Waxy型과 Waxless 型을 交雜한 F3에 있어서의 이 突然變異形質 Waxless 의 遺傳關係에 對하여 實驗한바 多少의 結果를 얻었으므로 이에 報告하는 바이다. 2. 大體로 Waxy 對 Waxless 形質은 2條對 6조, 黑??色對 白??色, 皮性對裸性, 三叉芝對長芝 그리고 正常身長型對 矮性型(Brachytic type)等 形質과의 사이에는 聯關關係가 없는 것 같았다. 그러나 突然變異系統 Jatun 45-3-1-2와 正常系統間交雜의 F2에 있어서 Waxy 對 Waxless는 條性(2條對 6條)과 聯關關係가 있는 것 같았다. 3. Waxless 突然變異系統間交雜의 F2에 있어서는 Waxy 對 Waxless 形質은 大體로 2雙의 遺傳子가 關與하는 獨立遺傳을 하는 것 같았다. 그런데 前年에 Mars Waxless X Jatun 45-3-1-2의 F2에서 본바 Waxy 對 Waxless는 2:1 로 分離하였고 本實驗에서 본바 F2에서도 같은 分離比를 보였으며 2雙의 遺傳子에 의한 獨立遺傳은 하지 않는 것 같았다. 4. 이러한 突然變異形質에 대한 聯關關係의 硏究에는 細胞遺傳學的考察도 倂行하여 좀더 詳細히 檢討되어야 할 것으로 생각된다. 1. The present paper described the results of linkage relation between Waxy(Gs) vs, waless(gs) and some characters in the F2 from waxless mutant types x normal types, and the genetical behavior of waxy vs, waxless mutant types of barley. 2. Generally speaking, there was no likage between Gs vs. gs and V vs. v, B vs. b, K vs k, and Br vs. br in the F2. However, it seemed to be linked with Gs vs. gs and V vs. v in the crossing with Jatun 45-3-1-2 in the F2. 3. In the other F3, the genes Gs vs. gs behaved as a 2 factor pair of independent assortment generally, whereas in Mars waxless x Jatun 45-3-1-2 in the previous data, Gs vs. gs segregated a 2:1 ratio and also in the F3, they did not show up a 2 factor pair of independent assortments. 4. Somehow, this kind of linkage study using materials mutated should be carried out in more detail and not only genetical investigation but also cytogenetical study is requested. * * * The writer wishes to express deepest appreciation to Dr. J.W.Lambert and Dr.D.C Rasmusson for making this study passible.

Heptachlor 토양잔류가 Hop 의 생육에 미치는 영향 : 제1보 Heptachlor 에 의한 Hop 피해양상 Ⅰ. Phytotoxic Symptom of Heptachlor Residues in Hop

박창규,한대성,박경열,이동우 한국환경농학회 1982 한국환경농학회지 Vol.1 No.2

水稻體中 IBP와 isoprothiolane의 殘留消長에 미치는 撒布時期의 影響이 調査되었으며, 아울러 水深과 土性의 影響도 관찰되었다. IBP(17%, G)와 isoprothiolane(12%, G)을 各各 6.8과 4.8㎏ AI/㏊의 比率로 湛水土壤에 1回 撤布한 후 時期別로 水稻體中 殘留量을 gas chromatograph로 分析하였다. 撒布時期와는 無關하게 두 殺菌劑는 뿌리조직을 통해 植物體로 신속히 吸收, 轉移되었으며, 稻體中 두 殺菌劑의 濃度는 撤布時期와는 無關하게 24時間 이내에 最高에 이르렀다. 최대분얼기 撒布時 두 殺菌劑의 分解樣相은 비슷한 傾向으로 時間의 經過와 더불어 신속히 分解되었다. 한편 출수기 撒布時에 IBP의 分解樣相은 최대분얼기 撤布時와 비슷한 傾向이나 isoprothiolane의 그것은 아주 相異하였다. 즉 藥劑撒布後 3日에 나타난 最高濃度가 그후 25日까지 큰 변화없이 維持되었다. 한편 두 殺菌劑의 殘留消長에 미치는 水深의 影響은 별로 없었으며, isoprothiolane의 경우 壤土와 殖壤土에서 보다 砂壤土에서 栽培한 水稻體에서 더 높은 殘留量을 보이는 傾向이었다. These studies were carried out to investigate the damage of root rot of hop by heptachlor residues in soil at nine farm fields and pot experiment for two years from 1980 to 1981. 1) Pot experiment results indicated that root rot of hop occurred in farm field were caused by heptachlor phytotoxicity. 2) The damage of root rot of the hop was found by heptachlor residues in soil. Hop root in the low concentration of heptachlor was turned to brown mottle, and then rotted. In high concentration, the hop root was decreased in number, blocked in growth, and resulted to greyish change with death. 3) Hop vine damaged by heptachlor was hardened and broken with ease. 4) Heptachlor epoxide which was inferred to be the main cause of hop root rot gave the damage to hop at 0.009 ppm reisdues in soil. 5) The phytotoxicity of heptachlor was proved to last for 10 years or more in this study.